clusterer_controller: copy modules/clusterer as the base of the contrib module

modules/clusterer as of 21109c9 in modules-contrib/clusterer_controller,
built as clusterer_controller.so and otherwise unchanged - it keeps the
module name clusterer, so the modules that depend on clusterer, and the
configs that set its parameters, work with it unchanged.  The rest of the
series reads as a diff against clusterer.

Author: Lt-Flash

modules-contrib/clusterer_controller/Makefile

@@ -0,0 +1,9 @@
+# WARNING: do not run this directly, it should be run by the master Makefile
+
+include ../../Makefile.defs
+auto_gen=
+NAME=clusterer_controller.so
+#DEFS+= -DCLUSTERER_DBG
+#DEFS+= -DCLUSTERER_EXTRA_BIN_DBG
+
+include ../../Makefile.modules